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Results Summary and Analysis

For the Collapsed Data Center Fabric with Juniper Apstra, comprehensive functional testing was performed on all validated switch platforms using the Junos OS Release 22.2R3-S3 and Apstra management software release of 4.2.1:

Baseline system test:

  1. Enabling devices for Apstra, applying pristine configuration, and designing logical devices and interface maps.
    • Provisioning of the Collapsed Data Center Fabric with Juniper Apstra JVD architecture using Apstra.
    • Create racks, templates, and blueprints.
  2. Assign interface and cabling maps and resources to all devices, including the fabric switches and external routers.
  3. Modifying Apstra blueprints to swap and test each validated switch platform.
  4. Apstra commits to deploy configurations to devices.
  5. Provisioning:
    • Virtual networks
    • Routing zones
    • Assign EVPN loopbacks for VRFs
    • Create IRBs through Apstra.

Operational and Trigger Tests:

  1. Operational testing of switches was carried out for the following:
    • Junos OS control plane functionality and fabric connectivity checks.
    • Tenant addition and removal.
    • Device upgrade to 22.2R3-S3 release.
    • Rebooting devices cause no issues when devices boot up.
    • Process restarts with the aim of minimal packet loss and full restoration of both control and data planes.
      • L2 Address Learning Daemon
      • Interface-control
      • RPD
    • Move four MAC hosts from one port to another without connectivity issues.
    • BFD failover tests by deactivating BGP on leaf switches with ESI configured to allow for traffic convergence.
    • Reset DHCP bindings to ensure fabric forwards DHCP requests and address assignment is released and reassigned.
    • Extended negative tests in an 8-hour cycle to ensure switches restore to baseline state and resume normal traffic forwarding:
      • Process restart
      • Deactivate BGP
      • Link failures
  2. Connectivity tests for the following were carried out:
    • Link failure
    • Multihomed link failure
  3. Resiliency tests for overlay connectivity testing for the following scenarios:
    • Intra-VLAN
    • Inter-VLAN to every host
    • Traffic to external routes
    • DHCP client/server flows

Scale testing numbers are as follows:

Features Scale Numbers
VLANs 2000
V4 host entries (MAC-IP) 10000
VNI 2000
IRB 2000
BGP Routing Table 168000
EVPN Table 10000

Performance numbers are as follows:

Features Scale Numbers
Singlehomed Access Link Failure Traffic recovery time < 50msec
Multihomed Access Link Failure Traffic recovery time < 50msec
Dual homed collapsed spine node reboot Traffic recovery time < 500msec
BGP protocol flap Traffic recovery time < 500msec
Global MAC initialization time for 20k entries < 10sec

The maximum VLANs per aggregated Ethernet (AE) interface is 2,000 on the QFX5120. Attempting to define more VLANs than this will cause a commit warning too many VLAN-IDs on an untagged interface. The other validated platforms for this JVD do not have this limitation.

Overall, the JVD validation testing didn’t detect any issues and all performance parameters were within the threshold and performed as expected.